Impedance driven collective effects in CEPC
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Published:2024-02-01
Issue:02
Volume:19
Page:P02016
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ISSN:1748-0221
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Container-title:Journal of Instrumentation
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language:
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Short-container-title:J. Inst.
Author:
Wang N.,Zhang Y.,Xu H.S.,Liu Y.D.,Li J.T.,Lin C.T.,Wang Y.T.,Zheng H.J.,Zhai J.Y.
Abstract
Abstract
The Circular Electron Positron Collider is a double ring
lepton collider covering beam energy from 45 GeV (Z) to 180 GeV
(tt-bar). Beam coupling impedance and the collective effects that
are triggered by the impedance are important subjects when targeting
high machine performance of an electron positron collider. A robust
impedance model is required for the instabilities evaluations as
well as to investigate their possible mitigations. Meanwhile, a
thorough investigation on the collective effects is essential to
identify the critical issues on the beam instabilities. In this
paper, a detailed impedance model has been built for the collider
ring and dominant impedance contributors have been identified by
evaluating the effective impedances. The potential collective
instabilities driven by the impedance are also discussed.
Subject
Mathematical Physics,Instrumentation
Reference21 articles.
1. Instability Issues in CEPC;Wang,2017
2. Collective effects in CEPC;Wang;ICFA Beam Dyn. Newslett.,2017
3. Mitigation of coherent beam instabilities in CEPC;Wang;CERN Yellow Rep. Conf. Proc.,2020